Wikispaces can interpret math symbols in LaTeX, unfortunately not inline text but on separate lines.
[[math]]
\rho^{\frac{1}{3}} v
[[math]]
 
[[math]]
E=m c^2 \ \ \ {\rm Einstein}
[[math]]




However, $E=m c^2 \ \ \ \rm{Einstein}$ does not work.
Math cannot be inserted inline (but text can be inserted in math mode.)


Another illustration:
Source code insertion example:
\begin{equation}
\delta(x-y)=\frac{1}{2\pi} \int e^{i(x-y)k} dk~~
\end{equation}

Or you can get the same result with $$
$$\delta(x-y)=\frac{1}{2\pi} \int e^{i(x-y)k} dk~~$$
$$\delta(x-y)=\frac{1}{2\pi} \int e^{i(x-y)k} dk~~$$

Entered in math mode, default alignment is left:
[[math]]
\delta(x-y)=\frac{1}{2\pi}\int e^{i(x-y)k} dk\hskip1in{\rm Math\ Mode}
[[math]]


Wikispaces supports also syntax highlighting of source code insertions.
For a list of supported languages in addition to LaTeX, see the wikitext code page.